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d12157efc8
linux/arch/powerpc
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Mark Rutland d12157efc8 locking/atomic: make atomic*_{cmp,}xchg optional 
Most architectures define the atomic/atomic64 xchg and cmpxchg
operations in terms of arch_xchg and arch_cmpxchg respectfully.

Add fallbacks for these cases and remove the trivial cases from arch
code. On some architectures the existing definitions are kept as these
are used to build other arch_atomic*() operations.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230605070124.3741859-5-mark.rutland@arm.com
2023-06-05 09:57:14 +02:00
..
boot powerpc: drop PowerQUICC II Family ADS platform support 2023-04-20 13:21:48 +10:00
configs powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
crypto powerpc: Move Power10 feature PPC_MODULE_FEATURE_P10 2023-04-20 18:20:05 +08:00
include locking/atomic: make atomic*_{cmp,}xchg optional 2023-06-05 09:57:14 +02:00
kernel powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
kexec powerpc/kexec_file: print error string on usable memory property update failure 2023-02-15 23:14:06 +11:00
kvm s390: 2023-05-01 12:06:20 -07:00
lib powerpc/64: vmlinux support building with PCREL addresing 2023-04-20 12:59:21 +10:00
math-emu
mm powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
net powerpc/64: vmlinux support building with PCREL addresing 2023-04-20 12:59:21 +10:00
perf powerpc/perf: Properly detect mpc7450 family 2023-03-30 23:35:43 +11:00
platforms powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
purgatory powerpc/kcsan: Add exclusions from instrumentation 2023-02-10 22:19:56 +11:00
sysdev powerpc updates for 6.4 2023-04-28 16:24:32 -07:00
tools powerpc: Move script to check relocations at compile time in scripts/ 2023-04-19 07:46:31 -07:00
xmon powerpc/64: vmlinux support building with PCREL addresing 2023-04-20 12:59:21 +10:00
Kbuild
Kconfig dma-mapping updates for Linux 6.4 2023-04-29 10:29:57 -07:00
Kconfig.debug
Makefile powerpc/configs: Make pseries_defconfig an alias for ppc64le_guest 2023-04-21 16:16:25 +10:00
Makefile.postlink kbuild: remove --include-dir MAKEFLAG from top Makefile 2023-02-05 18:51:22 +09:00